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HIV-Positive vs. HIV-Negative PJP
- HIV-positive pneumocystis pneumonia (PJP) develops slowly, resembling "termites eating a log".
- HIV-negative PJP progresses rapidly, like an "avalanche", with fewer organisms but more inflammation.
CT Scan for PJP Diagnosis
- Use CT scans for diagnosing PJP, as X-rays are insufficient.
- Look for ground glass opacity, septal thickening, and possibly thin-walled cysts.
HIV Testing in PJP
- Test for HIV if PJP is suspected, as it can be an initial AIDS sign.
- Consider HIV in patients with low lymphocyte counts and ground glass opacity.